670112111 has 4 divisors (see below), whose sum is σ = 670395000. Its totient is φ = 669829224.

The previous prime is 670112063. The next prime is 670112117. The reversal of 670112111 is 111211076.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 670112111 - 2¹⁰ = 670111087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670112117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137861 + ... + 142638.

It is an arithmetic number, because the mean of its divisors is an integer number (167598750).

Almost surely, 2^670112111 is an apocalyptic number.

670112111 is a deficient number, since it is larger than the sum of its proper divisors (282889).

670112111 is a wasteful number, since it uses less digits than its factorization.

670112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282888.

The product of its (nonzero) digits is 84, while the sum is 20.

The square root of 670112111 is about 25886.5237334023. The cubic root of 670112111 is about 875.0828159982.

Adding to 670112111 its reverse (111211076), we get a palindrome (781323187).

The spelling of 670112111 in words is "six hundred seventy million, one hundred twelve thousand, one hundred eleven".